Re: PRI, T1, E1 daffynitions (was Re: (PM) No answers!)

Richard Morrell (portmaster@ednet.co.uk)
Fri, 5 Feb 1999 10:16:11 +0000 (GMT)

On Fri, 5 Feb 1999, Alain Fontaine (Post master, UCL) wrote:

> Still no cigar...

Rats.

> E1 = 2048 kbps = 1* 64 kbps for framing and low-level service data
> 31* 64 kbps available for use
>
> PRI on E1 uses the 31* 64 available, breaking them in
> 1* 64 kbps D-channel for signaling
> 30* 64 kbps B-channels for carrying voice or data calls.

I knew it was only 1d channel and the math said it had to be 128k. :-S

So does this mean that my E1 circuit for my X.21 circuit is only capable
of transmitting 1984kbps worth of data?

--
Richard Morrell                                           richard@ednet.co.uk
System Administrator - edNET: Internet Access for Edinburgh - www.ednet.co.uk


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